Automatic collimation system by Talbot interferometry

Shinya Haramaki; Shunsuke Yokozeki; Akihiro Hayashi; Hiroshi Suzuki

doi:10.1117/12.427092

8 May 2001 Automatic collimation system by Talbot interferometry

Shinya Haramaki, Shunsuke Yokozeki, Akihiro Hayashi, Hiroshi Suzuki

Proceedings Volume 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001); (2001) https://doi.org/10.1117/12.427092
Event: Optical Engineering for Sensing and Nanotechnology (ICOSN '01), 2001, Yokohama, Japan

Abstract

This study concerns the automatic high precision beam collimation system using the Talbot interferometry. When the collimation beam is obtained placed point-source of light in focal position of the collimation lens, the defocus value is calculated from a moire fringe width in the Talbot interferometry using only two grating. With the advance of collimation, the moire fringe cannot be confirmed. Using the movement of moire fringe when one of grating shifts, the expanded moire fringe width is measured high precisely from the phase difference of intensity change of two detecting points, using peak position of the cross-correlation coefficient. With the result of the defocus value, the collimator lens is positioned by motor controller.

Citation Download Citation

Shinya Haramaki, Shunsuke Yokozeki, Akihiro Hayashi, and Hiroshi Suzuki "Automatic collimation system by Talbot interferometry", Proc. SPIE 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001), (8 May 2001); https://doi.org/10.1117/12.427092

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available